Dynamo-electric machine



V. G. APPLE.

DYNAMO ELECTRIC MACHINE.

APPLICATION FILED FEB. I4, I9I8. 1,396,947.

Patented Nov. 15, 1921.

2 SHEETS-SHEET 1.

AM I

Patented Nov. 15, 1921.

2 SHEETSSHEET 2.

v. 6. APPLE. DYNAMO ELECTRIC MACHINE.

APPLICATION FILED FEB.'I4| 1918.

UNITED STATES VINCENTG. APPLE, F DAYTON, OHIO.

DYNAMO-ELECTRIC MACHINE.

Specification of Lettiirs Patent.

Patented Nov. 15, 1921.

Original application .filed April 23, 1917, Serial No. 163,803. Divided and this application filed Febmay 14, 1918.

\ To it may come m:

' Be it known that I, VINCENT G. APPLE,

a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Dynamo-Elecstrong insulating material, such as bakelite Mint proper points for sparkless commutation.

or similar substance, and moldcit with the necessary conducting parts embedded therein, together with any other metal parts that may be necessary to; give it the desired strength. 1

I provide-meanswhereby the end plate, which carries the commutator brushes may be rotatahly adjusted to secure the brushes Inthe exemplifiedembodiment, the shaft of the armature does notproject beyond the end plate and the end of the shaft is utilized for moving aneccentrically rotatable con-.

tact for cooperation with the current reguf later, which .is removably'supported the end plateh', r

Other and further objects of my invention will become readily apparent to persons skilled in the art from a consideration of the following description when taken in conjunction with the drawings, wherein Figure 1 is a transverse section taken through part of the commutator of lFi 2, looking at the inside surface ofthe end plate. Fig. 2 is a central axial section taken on line 2-2 of Fig. 1, showing the means for attaching the end plate to the dynamo electric machine field frame. r Fig. 3 is a section taken on line 33 of Fig. 1. p

in all the views the same reference charasters indicate similar parts.

Serial No. 217,150.

The end plate, or disk of insulating material 5 1s secured to the field magnet frame 6 by cap screws 7. The holes 88 through which the cap screws pass are circumferent ally elongated and are bushed by metal linlngs 9, to strengthen the rim 10 of the plate to withstand the crushing effect of the screws 7-7. These holes are elongated, like the other holes contained in the rim, through which screws pass into the frame 6, to permit some rotary adjustment of the brushcarry ng plate 5 for a purpose heretofore ex lained. I i

he plate contains an annular groove 11 into which the end of the commutator 12 projects. This space is provided between the rim 13 and the outer ends 14 of the walls that partly surround the radially extending groove 15, in which the commutating brushes 16 and 17 are contained.

There are six brushes'of the 16 grou and six of the 17 group. The brushes 0 each group are contained in alternate grooves.

Partly embedded in the plate 5 is an annu-. larly disposed ring 18, on the outside surface of the plate and projecting inwardly from the ring are six studs 19. To these studs the'brushes of the 16 group are connected, as by a pig tail 20. Another ring 21 is a part of the bar 22', embedded in the plate, and to this ring the six brushes of group 17 are connected, as by a pig tail 23.

()ne set of brushes are positive and the other inner surface of the commutator 12.

Each of the brush grooves has an annular extension. to contain a spring 24 that yielding 25, through which the pig tail connect ing cables may move as the brush is worn and fed outwardly by the yielding spring placed under each of the brushes.

In the present example the plate 5 is axially perforated to receive the current regulator which has an axially movable 'contact 27 that cooperates with a rotatable con tact 28 that is eccentrically positioned in the armature shaft 29.

On the core 30 of the armature are mounted the conductors 31 that are connected to the commutator 12, which projects into a set are negative, and they all bear upon the radial plane in which part of the endplate is located. The core is supported on the bodiment of my invention, it is manifest that changes therein may be made in the arrangement and configuration of the parts within the scope of the appended claims.

Having described my invention, what I claim is 1. In a dynamo electric machine, an end plate, of insulating material, having a plurality of circumferentially disposed guideways for the commutator brushes carried on its inside surface.

2. In a dynamo electric machine an end plate of 'moldable, insulating material having a plurality of circumferentially disposed guideways for the commutator brushes molded therein.

3. An end plate, for a dynamo electric machine, of insulating, movable material having a plurality of circumferentially disposed guideways for the commutator brushes molded therein and conductors to which the brushes are to be connected, molded in said plate.

4. Anend plate, for a dynamo electric machine, of insulating moldable material having a plurality of circumferentially disposed guideways for the commutator brushes molded therein and having a spring holding cavity within which to contain a spring to" hold the respective brush in contact with a commutator.

5 An end late, for a dynamo electric machine, of insulating movable material having radially disposed guideways for commutator brushes molded therein and an annular groove confronting the open ends of the guideways within which to receive the end of a commutator. I

6. An end plate, for a dynamo electric machine, of insulating moldable material,'

having an axial perforation and having a Patent No. l, 3956, 947.

circumferentially series of circumferentially disposed grooves or guideways,between said perforation and the periphery of the plate.

7. An end plate for a dynamo electric machine, of insulating, moldable material having radially disposed guideways for commutator brushes molded therein and having elongated perforations near its periphery, to contain attaching screws, and to permit circumferential adjustm'ent of the plate.

v8. A dynamo electric machine having an end plate of insulating material and a commutator projecting into a plane including a part of the plate.

9. A dynamo electric machine having an end plate of insulating material and a plurality of receptacles in which to hold the guide commutator brushes.

10. A dynamo electric machine having an end plate of insulating material with radi ally disposed grooves in its inner face.

11. A. dynamo electric machine having an end plate of insulating material with a series of openings or grooves in-its inner face and a commutator facing the terminals of the openings.

12. An end plate of insulating material, for a dynamo electric machine, thicker near its hub than at its periphery and having grooves for conducting brushes in the thicker part of the plate.

13. An end plate of insulating material for a dynamo electric machine, extending across one end thereof and having a series of radially converging grooves for containing conducting brushes therein.

14. An end plate of insulating material, for a dynamo electric machine, extending across one end thereof and fixed near its periphery to a stationary part of the machine and having a plurality of radially converging grooves for conducting brushes therein.

In testimony whereof I hereunto setmy hand.

'VINCENT o. APPLE.

Grsiited l lovemher l5 l92l, to

VHNCEN'K c. APPLE.

it is hereby certified that error appears in the printed specification of the above numbered patentrequiring correction as follows: claim 3 and 5 respectively, for "movable" letters Patent should he read with this correction therein that the conform to the record of the case iothe totem: @ifice. v

Page 2, lines 25 and 40., read "moldable"; and that the said some may" Signed and sealedthis 14th day of January, A; D. i93d.

( Seal) M. J. Moore, Acting @ommimiooer oi Patents. 

